Hello! It's great to hear you are planning a trip to Florianópolis, Porto Alegre, and Gramado. Here are some travel tips for you.

Best Time to Visit:
The best time to visit these Brazilian cities is from October to May, when temperatures are warm and beachgoers can enjoy the spectacular coastline. The Christmas light display in Gramado also makes December a popular travel month.

Route and Accessibility:
Florianópolis and Porto Alegre have international airports, making them easily accessible from all over the world. Gramado can be reached by a two-hour car drive from Porto Alegre. Buses are the primary form of public transportation within and between the cities.

Accommodation and Booking:
There is a wide range of accommodations to choose from in all these cities, from five-star hotels to budget guesthouses. It's advisable to book in advance, especially during the high season (December to March).

Clothing and Essentials:
Pack your summer clothes, bathing suits, sunscreens, sunglasses, and hats for the beach. Also, remember to carry a light jacket as evenings can become a bit cooler, especially in Gramado.

Health and Safety:
No specific vaccinations are required for these destinations, but basic travel insurance is recommended. Keep an eye on your belongings and stay alert, as these are tourist cities with occasional petty crimes.

Local Etiquette and Respect:
Brazilians are very sociable and friendly. Feel free to engage with locals! Just keep in mind to respect the environment, especially the beach areas, and refrain from littering.